Created update-licenses to update previous versions of crates to have their corresponding licenses.
Created update-licenses to update previous versions of crates to have their corresponding licenses.

rust-lang/crates.io,steveklabnik/crates.io,rust-lang/crates.io,steveklabnik/crates.io,steveklabnik/crates.io,steveklabnik/crates.io,rust-lang/crates.io,rust-lang/crates.io